This will be baby No. 4 for the couple, who met as competitors on CBS' Survivor: All-Stars in 2003 and went on to compete in The Amazing Race. Married since April 2005, the former reality TV contestants are already parents to three daughters, Isabetta Rose, nearly 20 months, Carina Rose, 3, and Lucia Rose, 4.

"I love having three little girls," Amber told Us after giving birth to Isabetta in May 2012. "Dressing them alike is so much fun, and they love it, too! Three girls under 3 can be challenging at times, but we absolutely love having them so close in age. They play so well together!"

Her husband is similarly enamored of parenthood. "Being a father is by far the most fulfilling thing I've ever done," the Survivor: Redemption Island champ, a.k.a. "Boston Rob," gushed to Us in 2011. "I'm happy to bring home [the Survivor prize] to my family."